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The need To provide solar powered, led storage battery free, climate friendly and affordable vaccine/medical cooling and food refrigeration for parts of the world without reliable electricity. Over 2 billion people live in such regions. Currently kerosene, propane and to far lesser extent, solar powered refrigerators with batteries are used in these regions.

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SolarChill History In 2000 UNEP & Greenpeace conceived of the need for an environmentally friendly solar vaccine cooler and refrigerator. Concurrently the Danish Technological Institute (DTI) began the development of a solar powered vaccine cooler without batteries. In 2001, Greenpeace, UNEP and GTZ organized a meeting attended by WHO and UNICEF. Soon PATH joined. In 2009 the World Bank became a partner.

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SolarChill History Cont. Greenpeace International provided $200,000 ($150,000 from Dutch National Lottery) for research, development and field testing. Danish Energy Agency provided $150,000 for technical development. All founding partners participated in the development work and provided funding to cover their participation (total of about $500,000) Danfoss and Vestfrost were industrial participants.

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First prototype 2002: SolarChill exhibited at the World Summit on Sustainable Development in South Africa

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SolarChill History Cont. SolarChill prototypes were field tested over 18 months in Senegal, Indonesia and Cuba in 2004-2005. Field tests coordinated by DTI and overseen by PATH in Senegal and Indonesia and by GTZ ProKlima in Cuba.

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SolarChill Concept To be affordable coolers are built into existing mass produced cabinets. Coolers must not use any fluorocarbons in insulation or refrigerant cycle. No lead batteries for storage. Solar energy stored in ice.

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Intelligent fan in SolarChill A In 2009, a new generation of SolarChill-A was developed. It is equipped with an intelligent fan, which circulates air in the cooler during night-time. The fan is powered by a long life, rechargeable battery.It was developed to fulfil new WHO PQS standards for vaccine coolers, and the cooler was tested at DTI in 2010. Hold over time at 32°C is 4.75 days (no electricity) Autonomy time at 32°C is 6.12 days (very cloudy days) Vaccines must be maintained between + 2 C and + 8 C

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Environmental Benefits Eliminates use of fossil fuels by relying on three 60 watt solar panels. Eliminates the use of fluorocarbons by using hydrocarbons. Eliminates the use of kerosene. Average kerosene cooler uses 292-365 litres of kerosene each year. There are about 100,000 kerosene coolers in the world. Kerosene is a dirty fuel, harmful to human health.

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Environmental benefits cont. Eliminates the use of lead batteries. Tens of millions of lead batteries are disposed off each year in unsafe ways. There are about 12.2 kilograms of lead in each battery leading to contamination of land, water and air, and lead poisoning in children.

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President Kalam of India In 2006 President Kalam of India takes delivery of 2 SolarChill Units for testing purposes.

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World Bank SolarChill Projects In 2009 the World Bank joined the SolarChill Project. GEF approved 2.7 million dollars for demonstration and technology transfer projects with SolarChill A in Colombia and Kenya GEF project supports further development and field testing of SolarChill B.

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Future projects In the future, other types of SolarChill units will be possible: Coolers with greater cooling capacity for commercial use (requires larger compressors but components are almost commercially ready today) Coolers for higher ambient temperatures Specially designed milk coolers for small farms SolarChills for freezing and conserving food